NSTX NSTX Center Stack Upgrade Ensure fatigue resistant Welds: minimum # of locations shown, could be more. Various Weld Reinforcements & Hardware Replacement.

NSTXNSTX NSTX Center Stack Upgrade

Ensure fatigue resistant Welds: minimum # of locations shown, could be more.

Various Weld Reinforcements & Hardware Replacement

Hardware replaced on pf2 clamps

Hardware replaced on pf3 clamps

Pf2 mount

Pf3 mount

Umbrella foot mount

Weld reinforcement required for pf3 mount

Weld reinforcement for umbrella mount (front and back)

Weld reinforcement for (2) dome rib tabs.

NSTXNSTX NSTX Center Stack Upgrade

VV Support Legs: Foot Reinforcement

Epoxy anchor bolted to the floor.

NSTXNSTX NSTX Center Stack Upgrade

VV Support Legs

Modified Existing VV Leg Support

Plates added to side form box beam.

Welds need capacity to match upgrade loads. As-built welds need to match analysis.

Most likely, welds need to be reinforced.

Create cut out to provide clearance for TFOL connecting rod.

Add reinforcing gussets.

NSTXNSTX NSTX Center Stack Upgrade

Pedestal Upgrade

4

Base Plate

Lower Pedestal Section Upper Pedestal Section

Remove and Replace Pedestal

NSTXNSTX NSTX Center Stack Upgrade

Umbrella Reinforcements 1 & 2

5

Welded

Bolted Reinforcement

NSTXNSTX NSTX Center Stack Upgrade

Upper Umbrella Lid

6

New Upper Lid (1 water jet part)

For installation, Upper Lid Reinforcement Ring is sectional.

Upper Lid bolts to ring.Welded Reinforcement

Rings and gussets.

NSTXNSTX NSTX Center Stack Upgrade

Lower Umbrella Lid

7

New Lower Lid (sectional & bolted)Lower lid and Pedestal attachment (bolted)

1 water jet part

welded

welded

bolted

NSTXNSTX NSTX Center Stack Upgrade

Umbrella Upgrades

8

Replacement Leg (1 machined part)

Upper & Lower Umbrella Legs removed and replaced (welded).

Replace foot hardware, capture and slide with Inconel parts.

Arch Reinforcement Ring (sectional & welded)

NSTXNSTX NSTX Center Stack Upgrade

New (additional) PF4/5 Supports

Modified Existing PF4/5 Supports

PF4/5 Support

NSTXNSTX NSTX Center Stack Upgrade

New PF4/5 Support

10

New (additional) PF4/5 Support

NSTXNSTX NSTX Center Stack Upgrade

Replace Hardware with ASTM A193 B8M Class2 Material

Remove Clevis

Replace Column

Modifications to Existing PF4/5 Support

NSTXNSTX NSTX Center Stack Upgrade

TF Outer Leg Support Upgrades

12

Remove and replace clevis.

Remove and replace existing TFO Leg support turnbuckles.

Remove and replace connecting rods.

welded

Shimmed around existing TFO leg clamp.

NSTXNSTX NSTX Center Stack Upgrade

TF Outer Leg Support Upgrades

13

In718 bushing

In718 rod end housing

Spherical bearing

In718 pipe

TFOL Weldment

TFOL Weldment Joint TFOL Weldment

Clevis (x2)

VV Clevis

NSTXNSTX NSTX Center Stack Upgrade

Additional Parts/Upgrade Components

Additional pf2 clamps

Torque Plate 1 Torque Plate 2

NSTXNSTX NSTX Center Stack Upgrade

Installation Layout

15

Bus Tower

Pedestal

OH Bus

CHI Ring Bus

TF Bus

Upper PF1 Bus

Lower PF1 Bus

NSTXNSTX NSTX Center Stack Upgrade

CHI Ring Bus

16

G10 spacer Support/mount

Clamp

Water cooled .

NSTXNSTX NSTX Center Stack Upgrade

PF 1a, b, c Bus

17

Support/mount

Clamp

Upper PF1 Bus Runs

Bus Tower

NSTXNSTX NSTX Center Stack Upgrade

PF 1a, b, c Bus

18

Clamp

Lower PF1 Bus Runs

Bus Tower

NSTXNSTX NSTX Center Stack Upgrade

OH Coaxial Bus

19

G10 spacer

Support/mount

Water cooled rectangular bus section.

Air cooled Coaxial Bus section.

Connection to OH coil.

NSTXNSTX NSTX Center Stack Upgrade

TF Bus

20

G10 spacer

Support/mount

Water cooled section.

Bus Tower

Support/mount

Support/mount

G10 spacer